This regex will help you retrieve all the digits that are present in the string.
Regex is powerful and makes this a simple procedure.
public class FindAllDigitsInString{ public static void main(String args[]) { FindAllDigitsInString findAllDigitsInString = new FindAllDigitsInString(); findAllDigitsInString.proceed(); } private void proceed() { String alphaNumericString = "No#10,Prime Conclave,56014"; String allDigitsInString= alphaNumericString.replaceAll("[^0-9]", ""); System.out.println("All the digits in string: " + allDigitsInString); } }/*
Expected output:
[root@mypc]# java FindAllDigitsInString All the digits in String: 1056014*/